Csah 18 over Rapid River
GoodKoochiching County, Minnesota · 1.1 MI SE of JCT TH 11 · Structure no. 36514
- Built
- 1976
- 49 years old
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 166 ft
- 3 main spans
- Daily traffic
- 76
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Csah 18 over Rapid River is a prestressed concrete stringer/multi-beam or girder carrying Csah 18 over Rapid River in Koochiching County, Minnesota. It was built in 1976, so it is 49 years old, older than the Minnesota average of 38.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 76 vehicles a day, projected to reach 65 by 2041. The structure is 166 ft (50.6 m) long and 36 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Csah 18 over Rapid River built?
It was built in 1976, making it 49 years old in 2025.
What condition is Csah 18 over Rapid River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.
How much traffic does Csah 18 over Rapid River carry?
About 76 vehicles per day (2021 count).
How long is Csah 18 over Rapid River?
The structure is 166 ft (50.6 m) long with a longest span of 55 ft (16.8 m) and a deck 36 ft wide.
Who owns Csah 18 over Rapid River?
It is owned by the County Highway Agency.